| http://www.w3.org/ns/prov#value | - In order to transport or process the book blocks, for example to perform a trimming operation, it is often desirable to firmly grip the book in a book clamp which is moveable along a track. [0005] U.S. Pat. No. 3,702,129 purports to describe a mechanical book clamp which can accommodate various book thicknesses.
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